Help on meanings of SDI fields

I need some help with .SDI definition syntax.

Could anyone clarify me for these fields? Specially for AutoUpdate,
Container and Readonly field.

Example:

    854 SfxBoolItem ToolBox SID_TOOLBOX
    855
    856 [
    857     /* flags: */
    858     AutoUpdate = FALSE,
    859     Cachable = Cachable,
    860     FastCall = FALSE,
    861     HasCoreId = FALSE,
    862     HasDialog = FALSE,
    863     ReadOnlyDoc = FALSE,
    864     Toggle = FALSE,
    865     Container = FALSE,
    866     RecordAbsolute = FALSE,
    867     RecordPerSet;
    868     Synchron;
    869
    870     Readonly = FALSE,
    871
    872     /* config: */
    873     AccelConfig = TRUE,
    874     MenuConfig = TRUE,
    875     StatusBarConfig = FALSE,
    876     ToolBoxConfig = TRUE,
    877     GroupId = GID_VIEW;
    878 ]

(from: http://opengrok.libreoffice.org/xref/core/starmath/sdi/smath.sdi#931 )

Regards,
Rodolfo